© 2019 JETIR May 2019, Volume 6, Issue 5 www.jetir.org (ISSN-2349-5162) JETIRCQ06088 Journal of Emerging Technologies and Innovative Research (JETIR) www.jetir.org 462 DIFFERENT METHODS FOR ACQUISITION AND ANALYSIS OF ECG SIGNAL USING BIOMEDICAL SOFTWARE Ukshit Prajapai 1 , Divya Savani 2 , Harsh Shingala 3 , Prashant Tanti 4, Dimpal Khambhati 5 [1,2,3,4 ] B.Tech Students [5] Assistant Professor Biomedical Engineering Parul Institute of Technology, Vadodara, India. Abstract :This paper describes the various techniques used for automatic detection and analysis of electrical activity of heart using ECG. Electrocardiogram (ECG) is used for diagnostic purpose. Where, it is used for Diagnosing heart condition, fitness, regular checkup and many other diseases. If heart disease is not treated properly on time it may leads to cardiac arrest, arrhythmia, stroke and many other diseases. There are various method of analyzing ECG signals by detection of QRS complex, PR interval, R-R interval and ST segment. IndexTerms-Electrocardiogram, Arrhythmia, QRS complex, Wavelet, MATLab, Heart rate, Signal processing I. INTRODUCTION As per recent study by the Registrar General of India (RGI) and the Indian Council of Medical Research (ICMR), nearly about 25 percent of deaths occur because of heart diseases [1]. Heart is the most important part of body where due to any irregularity in its functioning lead to various diseases so to overcome this issue we use electrocardiogram. Electrocardiogram is the technique which is widely used for diagnosis of heart parameter. Where in this technique we determine the electrical activity of heart by placing different kind of electrode over skin and this electrode detects minor change on surface of the skin due to heart muscles activity during depolarization and repolarization of heart. Fig .1 The normal ECG waveform [4]. To acquire ECG signal 12 leads and 10 electrodes are placed over chest where each lead detects different angle of activity of heart and over a time ECG waveform is obtained. This waveform is also known as PQRST waveform.Where, it has got different intervals and its own significance and they are as follows: P wave: Identify the way of depolarization that spreads from the SA node throughout the atria [2].in this period depolarization of atrium take place. Time duration of P wave is 80-100ms. PR interval: The time duration of this interval is 120-200ms. it represents the time between the onset of atrial depolarization and the onset of ventricular depolarization[2]. QRS complex: It generates due to ventricular depolarization. Time duration of this complex is above 100ms and below 120ms. ST segments:The ST segment connects the QRS complex and the T wave and has duration of 0.005 to 0.150 sec (5 to 150 ms) [3].